EP 0563009 A1 19930929 - Organic electroluminescent element.
Title (en)
Organic electroluminescent element.
Title (de)
Organisches Elektrolumineszentelement.
Title (fr)
Elément électroluminescent organique.
Publication
Application
Priority
EP 92810210 A 19920323
Abstract (en)
An organic electroluminescent element (1) in which an anode (13), a hole transport layer (15), a light-emitting layer (17) and a cathode (19) are laminated in this order, wherein the cathode comprises a metal block portion or portions (19A) comprising a metal having a high work function and a metal block portion or portions (19B) comprising a metal having a low work function, both of the metal block portions of the metal having a high work function and of the metal having a low work function being in contact with the light-emitting layer (17), and a process for preparing the same by using the technique of vapor-deposition. The present invention can provide an El element which can give a higher luminance and longer lifetime than those proposed conventionally with a low applied voltage in the constitution of an anode/a hole transport layer/a light-emitting layer/a cathode, and, with no restriction of material used. <IMAGE>
IPC 1-7
IPC 8 full level
H05B 33/12 (2006.01); C09K 11/06 (2006.01); H01L 51/50 (2006.01); H05B 33/10 (2006.01); H05B 33/26 (2006.01); H01L 51/52 (2006.01)
CPC (source: EP)
H05B 33/10 (2013.01); H05B 33/26 (2013.01); H10K 50/826 (2023.02)
Citation (search report)
- [A] EP 0468440 A2 19920129 - EASTMAN KODAK CO [US]
- [A] EP 0468438 A2 19920129 - EASTMAN KODAK CO [US]
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 0563009 A1 19930929; EP 0563009 B1 19980513; DE 69318463 D1 19980618; DE 69318463 T2 19980903; JP 3238787 B2 20011217; JP H0645074 A 19940218
DOCDB simple family (application)
EP 93810183 A 19930315; DE 69318463 T 19930315; JP 6387593 A 19930323